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Surface Enhanced Raman Scattering on Self-assembled Nano Silver Film Prepared by Electrolysis Method
Yi-pu Kang, Ren-ming Liu, Min-zhen Si*
Department of Physics and Electronics, Chuxiong Normal University, Chuxiong 675000, China
Abstract:
We demonstrate surface enhanced Raman scattering (SERS) detection of self-assembled nano silver film using a low-cost electrolysis strategy at a proper voltage and silver nitrate concentration in electrolyte. The concentration dependence of SERS from crystal violet (CV) molecules adsorbed to silver film was systematically studied. Importantly, the SERS surface enhancement factor of such nano silver film was 603, which was measured by a portable Raman spectrometer. The minimum concentration of detectable CV molecules can be as low as 10-11 mol/L. The nano silver film prepared by this electrolysis method is an active, stable, cost-effective, and reusable SERS substrate.
Key words:  Self-assembled nano silver film, Surface enhanced Raman scattering, Crystal violet
FundProject:
Surface Enhanced Raman Scattering on Self-assembled Nano Silver Film Prepared by Electrolysis Method
康颐璞, 刘仁明, 司民真*
楚雄师范学院物理与电子科学系,楚雄675000
摘要:
用一种廉价的电解方法制备了纳米银膜,并详细研究了在这种银膜上的表面增强拉曼散射效果.结晶紫为本实验的检测性分子.通过实验发现,这种银膜用便携式拉曼光谱仪测试并计算出的表面增强拉曼散射的增强因子为603,并对结晶紫的最小检出限为0.1 nmol/L
关键词:  自组装银膜,表面增强,结晶紫
DOI:10.1088/1674-0068/22/04/435-439
分类号: